Attachment for furnaces.



PATENTED OCT. 29, 1907.

B. P. HERB. ATTACHMENT FOR FURNACES.

APPLICATION FILED 0011.29, 1906.

3 SHEETS-SHEET 1.

' 3". Inventor.

Witnesses.

.lttorney.

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PATENTED OCT. 29. 1907.

F. HERB. ATTACHMENT FOR FURNACES.

APPLICATION FILED 0OT.29, 1906.

3 SHEETS-SHEET 2.

7m Attorney No 869,434. PATENTED OCT. 29. 1907. B. P. HERE.

ATTACHMENT FOR FURNACES.

APPLICATION FILED OUT. 29, 1906.

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therein.

The invention also relates to certain details of confdetac hed end elevation of my improved furnace at i In referring to the drawings for the details of contached to a furnace to supply vapor to the heated air up with a spoon or blade into a vapor sufliciently fine UNITED STATES BENJAMIN F. HERB, OF

BUFFA LO, NEW YORK.

ATTACHJWENT FOR FURNACES No. 869,434. Specification of Letters Patent. Patented Oct. 29, 1907.

Application filed October 29. 1906- Serial No. 341.170.

To all whom it may concern:'

Be it known that I, BENJAMIN F. Hens, a. citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented a certain 5 new and useful Improvement in Attachments for Furnaces, of which the following is a specification.

This invention relates to an attachment for furnaces or the like and is designed to supply vapor to heated air in proper condition to combine with the heat units The object of the invention is to proigluce a device to be attached to furnaces or the like for the purpose of creatingthe desired proportion of relative humidity in artificially heated air.

struction of the device, all of which will be fully and clearly hereinafter described and claimed, reference being bad to the accompanying drawings in which a preferred construction of the device is illustrated in detail and also attached in proper operating position to a furnace. 1

In the drawings,Figure 1, represents a. front. elevation of a furnace equipped with my improved attachment, a portion of the furnace casing being broken away to show the attachment. Fig. 2, is an enlarged tachinent. Fig. 3, is a central longitudinal section through my improved attachment on line aa, Fig. 2. Fig. 4, is a detached view of the screw cap. Fig. 5, is an enlarged detached plan view of theblock. Fig. (i, is an enlarged detached side view of the block. Fig. 7, is an enlarged detached end view of the block. Fig. 8, is an enlarged fragmentary section on line bb. F ig. 6, 7 showing the valve in the block. Fig. 9, is a detached plan view 01' the drip cup. Fig. 10. is a transverse section on line cc, Fig. 6. Fig. 1], in a fragmentary view of the furnace casing showing the openings therein through which the nozzle is introduced. Fig. 12 is a greatly enlarged central vertical longitudinal section through the improved attachment with the tapering valve plug turned to partially close the small outlet. Fig. 13 is a greatly enlarged front view of the attachment with the drip cup and spoon in section and the valve plug turned to partially close the outlet as in Fig. 12. Fig. 14 is a greatly enlarged transverse vertical section on line (I d, Fig. 12.

struction like numerals designate like parts.

The invention comprises a device which can be atin proper condition to combine with the heat units therein and thus increase the relative humidity in proportion to the heat. This is accomplished by introducing a very minute stream of water and breaking it to combine with the heat.

While in Fig. l, a furnace l, of well known hot air type is illustrated, the device is equally adapted to be used in conjunction with various othen styles of furnaces.

The side wall of the furnace is provided at suitable points with openings through which the nozzle of the device together with the drip cup, the drip cup pipe and the locking key, are inserted.

The opening 2. for the locking key is substantially of a pear shape form and is located above the opening it, through which the nozzle and drip cup are inserted.

' The device or attachment has a hollow casing 4, which is closed at one end by a screw cap 5, and is provided with a reduced tubular screw threaded portion (3, at the oppositeextremity in which a tubular metal hose coupling 7, screws.

One end of a rubber hose 8, is fitted upon the coupling 7. and its opposite end is attached to a valved coupling 9, which is connected to a service water pipe 10, communicating with one of the water mains of a city or to The nozzle has an opening 14, xtending throughout,

which is greatly smaller than the opening in the tubular portion and a block l5, screwed upon the nozzle, has an opening 16. communicating with the opening in the nozzle and reduced sufficiently at its outer end to pro vide a very small outlet 17, through which a very fine stream can be projected. The preferable size of the outlet 17. in the block is about one thirty-second of an inch in diameter, although it may be made smaller or larger to suit the conditions.

A transverse tapering recess 18, is formed in the block l5 near its outer end. and a tapering valve plug 19, is rotatably ti tted in said recess. The valve plug 19, is provided with a transverse openim 20. which. in part, is substantially the same size of, and is adapted to register with the opening '16, on one side; and is reduced at 21, on the opposite side to substantially the size of, and adapted to register with the outlet opening line Fig. 8.

Theopening 16 in the block 15, is sulliciontlyshort to avoid the danger of capillary attraction. which would tend to deflect the stream and reduce its force; and the opening 20, in the valve plug 19, is tapered to about 60 degrees where it merges into the reduced opening 21, to prevent back pressure or counter currents as much as possible.

The outer extremity of the outlet opening 17, is

tapered to provide a bell month which will not intcrl furnace and is only necessary at rare intervals when the fore with the stream.

The valve plug is provided with a reduced portion 22, over which a plate 23, is fitted to hold the plug in 1 the recess. The plate is fastened upon the exterior of one side of the block l5 by screws 24, or other suitable fastenings.

The upper extremity 25, of the plug is formed to constitute a head upon which a turning key can be titled to rotatably adjust the plug.

in a longitudinal opening 26, cut in a reduced lateral extension 27, beneath the block proper, and preferably formed integral with the block, is slidably supported arod 28, which carries, at its outer end a spoon or blade 29. This spoon or blade. extends in the path of the stream from the nozzle outlet and serves to break the stream up into separated molecules of vapor which are mi nu to enough to unite with the heat units in the artilicially heated air.

A drip cup 30, is supported from the lateral extension of the nozzle beneath the spoon or blade. 28, and catches any drip fronrsaid spoon. A pipe 3], extends from the drip cup or pan out through the furnace to any convenient localityv While the purpose of the drip cup is to catch the surplus water, it is only necessary at intervals, as usually the device is adjusted so that all of the stream issuing from the nozzle is broken up fine enough to be taken up by the air.

The device is preferably fastened in place on the furnace by a locking key 32, which is rotatably supported by an extension 33, of the cap 5, and is fitted through the pear shaped opening 2, in the furnace wall and turned to bring its lateral locking lug 34, in contact with the interior of the furnace wall. In this device both the volume and pressure of the water are regulated by the tapered rotary valve in the block.

The operation of this device is as follows,The device being attached to a furnace in the manner heretofore set forth or in an analogous way so that the nozzle will project into the furnace and being connected to a Water supply pipe, the valve in the coupling 9, is turned to permit the wafer to flow into the casing. The volume of water issuing from the outlet is regulated by adjust.- ing the tapering valve p'ug in the end of the nozzle so that only sufiicient water will be projected to be coinpletely combined with the air.

it has been found by experience that the best results are obtained when the tapering valve plug is turned to partially close the outlet leaving a substantially oval opening for the passage of the stream, substantially as shown in Figs. l2, l3 and 14.

When the valve plug is partially turned in Fig. 12, a portion of the stream strikes the abrupt wall ex' posed at the top of the outlet and gives a twirling or twisting motion to the water tending to disrupt or break up the continuity of the stream particularly on its outer surface, and has the effect of forcing the stream against the breaking spoon in condition to be broken into its finest possible atoms for combination with the atmospheric heat.

The drip cup is only put on as a precautionary device to absolutely prevent any water dripping into the device is not properly adjusted and the flow of water is greater than is required to produce sufficient molecules of vapor to completely combine with the air, thereby leaving a surplus of water which will drop into the furnace unless caught.

The fundamental principle of this device is founded upon the breaking of the stream into its smallest form, so that it will be minute enough to combine with the heat units in the atmosphere. it

This improved attachment for producing relative humidity in artificially heated atmosphere is designed for connection to a furnace or any indirect heating system and may be changed or modified, without departing from the scope of my invention, sufficiently to enable its attachment to any of the various indirect heating systems.

I claim as my invention. 7

i. A device of the class described having a hollow casing connected to a source of water supply, a nozzle projecting from thev casing and having an opening extending throughout. :1 block fastened to the nozzle and provided with an opening communicating with the nozzle opening, a transverse tapering recess, and :1 very small outlet and a tapering valve plug rotatably fitted in the transverse recess in the block and having a transverse opening which in part is substantially the size of and adapted to register with the enlarged portion of the opening through the block and in part is reduced to substantially the size of and is adapted to register with the very small outlet; the transverse opening through the valve plug tapering to about sixty degrees at the merging point of the reduced opening to obviate back pressure or counter currents, substantially as set forth.

2. A device of the class described having a hollow casing connected [0 a source of water supply,.a nozzle projecting from the casing and having an opening extending throughout. and a block fastened to the nozzle and provided with an opening communicating with the nozzle opening, a transverse recess, and a very small outlet and a valve plug rotatably fitted in the transverse recess in the block; said small outlet being sufficiently short to prevent capillary attraction.

ii. The combination with a furnace or the like having an opening in its wall, of a device having connection to a source of water supply under pressure and a nozzle extending through iiie opening in the wall for Introducing water in the form of molecules of vapor into said furnace.

4. A device of the class described having a hollow casing connected ton source of water supply, a nozzle projecting from the casing and having an opening extending throughout. a block fastened to the nozzle and provided with an opening communicating with the nozzle opening and a transverse recess, and a valve plug rotatably fitted in the transverse recess in the block, an extension beneath the block having an opening and a rod supported in said openin; and provided at its outer end with a breaking spoon extending in the path of the stream from the outlet.

In a device or" the class described having a hollow casing connected to a source of water supply, a nozzle projcciing from the casing and having an opening extending throughout, a block fastened to the nozzle and provided with an opening communicating with the nozzle opening and a transverse recess, and a valve plug rotatably fitted in the transverse recess in the block, an extension beneath the block having an opening and a rod supported in said opening and provided at its outer end with a breaking spoon extending in the path of the stream from the outlet and a drip cup supported beneath the spoon.

BENJAMIN F. HERB.

Witnesses:

L. M. SANes'rnR, Gno. A. NEUBAUER. 

